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The Centre for Alternative Technology (Nature and The Environment)
The Centre for Alternative Technology is a well established educational charity based in Wales which works for a sustainable future. It tests and displays strategies and tools for doing this and these pages form a useful introduction to its work. You can find out how good or bad your lifestyle is for the planet, take a rather basic virtual tour of the organisation's physical site, and 'buy green by email' using its online catalogue of books and products. Worthy and worthwhile.